KR101746285B1 - support clamp for conductor rail - Google Patents

Abstract

A support clamp for a rigid electric wire is disclosed. According to the support clamp for a rigid wire cable according to the present invention, the occurrence of an arc can be prevented by eliminating the voltage unevenness between the rigid wire and the support bracket, and the stability and reliability of the structure can be secured by eliminating the durability degradation factor of the rigid wire support structure And it is possible to secure convenience in the construction of a rigid electric wire and increase the productivity.

Description

Support clamp for conductor rail}

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support clamp for a rigid electric wire, more particularly, to a support clamp for a rigid wire which can prevent arc generation by eliminating voltage unevenness between a rigid wire and a support bracket,

In general, electric railway is used by many people because of its advantages of quick, accurate and stable compared with other transportation methods. Moreover, recently, high-speed railway is widely used, and it is attracting attention as a safe and convenient public transportation means.

Electric railway, which has been attracting attention as a new transportation means in the 21st century along with the opening of high-speed railway, has recently been required to improve the performance, reliability and safety of electric railway lines due to speeding up of electric railway,

Here, a catenary line can be defined as a line including a catenary line for supplying electric power in contact with a current collecting device of a train that runs the line, and the facilities attached thereto.

The electric power required for the traveling of the electric train is supplied through a catenary line and a pantograph which is a current collecting device of the vehicle. The electric line for supplying electricity to the electric train is classified according to the way of supplying electric power.

Specifically, the catenary line can be classified into an overhead catenary system and a third rail system, and the machined catenary line is divided into a rigid constriction system and a suspension system.

In this case, the suspension system is applied to the ground section in a manner that the line is guided by using a wire line. Since the line, the wire and the dropper line must be connected together and a peripheral device such as a tension control device is required, , It is difficult to apply it to the tunnel section because of its complexity.

That is, in order to apply the suspension bridge system to the tunnel section, the tunnel cross-sectional area must be increased so much that the construction cost is excessively increased. Also, since the installation space is narrow, daily inspection and maintenance are not easy.

The third railway type is advantageous in that it can be installed on a narrow space such as a tunnel by installing a power supply rail on the road surface or a side surface to supply electric power. However, since the power supply rail is disposed on the ground, It is dangerous and only applies to some special sections.

On the other hand, the above-mentioned rigid-body hitching system is constructed by integrating a catenary cable into a rigid body and installing it by using a separate structure such as a bracket. Thus, no tightening is required and a separate tension maintaining device is not necessary. .

In fact, the height of a rigid body line is about 90 to 120mm including a rigid body and a catenary line, and the total height of the contact between the collecting contact of the catenary line and the tunnel upper ceiling considering the support and electrical separation at low voltage (DC 750V or 1500V) Do.

Therefore, since the installation space of the rigid catenary line is small, it is possible to greatly reduce the construction cost in the new tunnel, and it is also advantageous in the maintenance work in the tunnel.

The rigid catenary is called the R-Bar by reducing the rigid bar. The rigid catenary with a cross-sectional shape similar to that of the T-bar is called a T-Bar. Although the R-Bar is superior to the T-Bar in terms of workability and current collecting performance, it is widely used. In Korea, T-bar is applied to the DC section and R-bar is applied to the AC section.

Since the rigid electric wire must serve as a conductor capable of supplying electric power to the electric vehicle, it is mainly applied to a light aluminum alloy material, and expansion and contraction occur due to changes in ambient temperature. .

As described above, the rigid electric wire is supported by a structure such as a bracket provided at regular intervals. In order to prevent an arc from occurring due to a voltage unevenness between the bracket and the rigid electric wire, it is necessary to prevent the rigid wire and the bracket from being equalized It is necessary to connect and maintain the voltage uniformly.

However, if the length of the rigid catenary line is expanded and contracted due to the ambient temperature change, the connection area may be enlarged. Therefore, it is necessary to secure the length of the equalization line, but when it is too long, There is a problem that it can not be made indefinitely because it may get caught or interfere with the body of the train.

If the length of the equalization line is short, the equalization line acts as a detent which interferes with the elongation and contraction of the rigid body line as the elongation and contraction of the rigid catenary line occurs. If the extension or contraction is excessive, the equalization line may be broken or broken.

In addition, since the equalizing line acts as an obstacle to the elongation of the rigid body line, stress may be applied to the support clamp of the bracket supporting the rigid body line, thereby causing a problem of lowering the durability of the entire supporting structure.

Further, since the uniform pressure lines must be connected to the respective supporting points of the rigid body electric cable, it is difficult to implement and the productivity is lowered and the cost is increased.

Therefore, there is a need for a support bracket that can solve the voltage unevenness between the rigid body line and the support bracket to prevent arc generation and ensure ease of installation.

Embodiments of the present invention are intended to solve the voltage unevenness between the solid body line and the support bracket to prevent arcing.

Also, it is aimed to secure the stability and reliability of the structure by eliminating the durability deterioration factor of the rigid body support structure.

In addition, it is aimed at securing convenience in the construction of rigid electric wire and increasing productivity.

According to an aspect of the present invention, A main shaft connected to the body on one side and to a support bracket on the other side; A support portion detachably coupled to both sides of the body and slidably supporting the rigid electric wire; And a conductive member provided on the support portion and electrically connecting the rigid electric wire and the support bracket to uniformly maintain the voltage of the rigid wire and the support bracket.

The support portion may include a groove portion on which the rigid electric wire is seated and supported.

The conductive member may be made of a sliding bearing or a plastic sliding part.

The conductive member may be made of polyoxymethylene (POM).

The surface resistance of the conductive member may be 10 < 11 >

The conductive member may have a coefficient of friction of 0.35 or less.

According to another aspect of the present invention, there is provided a support clamp connected to a support bracket for supporting a rigid electric wire, the support clamp comprising: a main shaft connected to the support bracket; A supporting portion coupled to or integrated with the main shaft to support the rigid electric wire; And a conductive member provided on the support portion and electrically connecting the rigid electric wire and the support bracket to uniformly maintain the voltage of the rigid wire and the support bracket.

The surface resistance of the conductive member may be 10 < 11 >

The conductive member may have a coefficient of friction of 0.35 or less.

Embodiments of the present invention can prevent arc generation by eliminating voltage unevenness between a rigid body line and a support bracket.

In addition, it is possible to secure the stability and reliability of the structure by eliminating the durability deterioration factor of the rigid body support structure.

In addition, it is possible to secure convenience in the construction of a rigid electric wire and increase the productivity.

1 is a sectional view of a rigid electric wire according to an embodiment of the present invention;
2 is a perspective view of a connecting plate according to an embodiment of the present invention.
3 is a perspective view showing a state in which a rigid electric wire is bonded by a connecting plate according to an embodiment of the present invention;
4 is a perspective view of an expansion joint according to an embodiment of the present invention.
5 is a top view of a support bracket according to an embodiment of the present invention.
6 is a front view showing a state in which a rigid electric wire is connected to a railway vehicle according to an embodiment of the present invention.
Figure 7 is an exploded perspective view of a support clamp according to one embodiment of the present invention.
8 is a perspective view of a support clamp according to an embodiment of the present invention.
Figure 9 is a front view of a support clamp according to an embodiment of the present invention;
10 is a sectional view taken along line AA 'of FIG. 9
11 is a sectional view taken along the line BB '

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to the embodiments described herein but may be embodied in other forms. Rather, the embodiments disclosed herein are provided so that the disclosure can be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like reference numerals designate like elements throughout the specification.

2 is a perspective view of a connection plate according to an embodiment of the present invention. FIG. 3 is a cross-sectional view of a rigid body according to an embodiment of the present invention, As shown in Fig. FIG. 4 is a perspective view of an expansion joint according to an embodiment of the present invention, and FIG. 5 is a plan view of a support bracket according to an embodiment of the present invention. FIG. 6 is a front view showing a state that a rigid electric wire is connected to a railroad vehicle according to an embodiment of the present invention. FIG.

1 to 6, a structure in which a rigid electric wire 50 according to an embodiment of the present invention is installed will be described.

The rigid catenary 50 includes a catenary 54 for supplying current through electrical contact with the pantograph 2 provided on the upper portion of the electric motor 1 and a rigid body 52 coupled with the catenary 54. The current conveyed by the rigid catenary line 50 is supplied through the pantograph 2 installed on the upper portion of the electric motor 1 for the purpose of running the electric motor vehicle, and the rail 60 is used as a return line.

Generally, a rigid catenary line 50 is connected to a unit of 12 m as a unit, and the height of the support bracket 300 and the support clamp 200 provided at regular intervals is such that the pantograph 2 of the electric motor 1 touches Can be installed. At this time, the rigid body 52 has protrusions 52a on both sides of the upper portion, and the protrusions 52a are supported by the support clamps 200.

The rigid electric wires 50 constituting each of the unit units may be connected to each other by a connection plate 70. 3, the bolts 74 are fastened to the bolt holes 56 and 72 in a state in which the adjacent rigid body 50 and the connecting plate 70 are fastened, You can connect.

The number and shape of the connection plate 70 may be variously modified according to the design shape of the rigid catenary cable 50.

A flow prevention device (not shown) is installed at a central point of the rigid electric cable 50 to prevent the rigid electric cable 50 from being pushed as the electric motor 1 passes. Between the adjacent rigid electric cables 50, The expansion joint device 100 is installed so as to absorb a change in length due to deformation of the rigid electric cable 50 during expansion and contraction and to maintain electrical contact with the pantograph 2.

The structure of the expansion joint device 100 will be described in more detail. The connection block 110 is fixed to each end of the rigid catenary cable 50. Two connection blocks 110 may be provided on both sides of the ends of the rigid electric cable 50 in the width direction. Further, two end portions of the adjacent rigid electric wire 50 may be provided on both sides in the width direction so as to correspond to the ends.

The connection block 110 is fixedly coupled to the rigid electric cable 50 by welding or bolting. At this time, the connection block 110 contacts the rigid electric cable 50 to maintain the electrical connection.

At least one connection bar 120 is inserted into the connection block 110. One end of the connection bar 120 is inserted into the connection block 110 at one side and the other end is inserted into the connection block 110 at the other side adjacent to the connection block 110.

One end and the other end of the connecting bar 120 are inserted into and connected to the adjacent connecting block 110 so that neighboring connecting blocks 110 are electrically connected to each other. 50 can be electrically connected.

Three connection bars 120 may be provided to connect the neighboring connection blocks 110. Three connection bars 120 connecting the connection blocks 110 fixed to the other side in the width direction of the rigid- And the bar 120 may be combined to electrically connect the rigid electric wire 50 separated from the six connection bars 120 to each other. However, the present invention is not limited thereto, and the number of the connection bars 120 may be varied as needed.

The connection bar 120 may be made of a metallic material having good electrical conductivity. For example, a copper bar made of copper may be used as the connection bar 120.

The connection block 110 is movably provided along the connection bar 120 inserted through the connection block 120. Therefore, when the rigid catenary 50 is extended and contracted, the connection block 110 fixed to the rigid catenary 50 moves along the connection bar 120, The electrical connection between the rigid electric wires 50 can be maintained at any position of the connecting bar 120. [

A center stopper 122 may be provided at the center of the connecting bar 120 to prevent the neighboring connecting blocks 110 from colliding with each other when the rigid catenary 50 is extended.

The center stopper 122 is fixed to the center of the connecting bar 120 in a state of being penetrated by the connecting bar 120 and the center stopper 122 also functions as a marker for indicating the center of the connecting bar 120 .

Therefore, when the adjacent rigid bodies 50 have the same amount of expansion and contraction, the connecting blocks 110 on both sides of the connecting bar 120 are positioned at symmetrical distances with respect to the center stopper 122.

A plurality of connection bars 120 are maintained at an equal potential at the ends of the connection bars 120 and the connection blocks 110 are prevented from separating from the connection bars 120 when the rigid- An end stopper 124 may be provided.

The end stopper 124 is bolted to the connecting bar 120 in a state in which a bolt tap (not shown) formed on the end of the connecting bar 120 is aligned with a bolt hole (not shown) formed on the end stopper 124, 120, respectively.

A brass contact blade 154 is interposed between the rigid electric transmission lines 50 to maintain mechanical continuity in place of the intermittent metro line 52. In the portion where the rigid metro line 50 is disconnected, 154 are brought into contact with the pantograph 2 of the electric vehicle 1 in place of the electric wire 52.

Two of the contact blades 154 are inserted and fixed in the one side rigid cable 50 and the other two are inserted and fixed in the other side rigid cable and the contact blades 154 inserted in the other side are alternately overlapped.

In the expansion joint device 100 constructed as described above, when the rigid electric cable 50 is contracted, the neighboring rigid electric wires 50 are distant from each other, and the connection block 110 fixed to the rigid electric cable 50, The connection block 110 moves along the connection bar 120 in a direction in which the adjacent connection blocks 110 move away from each other.

On the contrary, when the rigid electric cable 50 is extended, the neighboring rigid electric wires 50 are brought close to each other, and the adjacent connection blocks 110 move in the direction of approaching each other along the connection bar 120 .

Even if the rigid electric cable 50 repeats elongation and contraction in this way, the separated rigid electric wires 50 continue to be electrically and mechanically connected by the connection block 110 and the connecting bar 120 constituting the expansion joint device .

5, the support bracket 300 for supporting the rigid catenary 50 may include a fixing member 310, an insulator 320, and an angle member 330.

The support bracket 300 supports the rigid catenary 50 and is installed in the support 10 installed in the ground section or the tunnel section. The support bracket 300 supports the rigid catenary 50 in accordance with the circumstance where the rigid catenary 50 is installed, So that the horizontal displacement and the vertical displacement of the rigid catenary line 50 can be controlled.

The support 10 is a structure installed in a ground section or a tunnel section so as to support the support bracket 300 at a predetermined height, and may be configured to install an H-beam in a terrestrial section or a tunnel section . 7 shows a state in which the support 10 is installed in a tunnel section. The fixing member 310 is composed of one fixing plate 311 and two fixing rods 312.

The fixing plate 311 may be a flat plate which is in close contact with one surface of the support 10, and a hole through which the fixing rod 312 penetrates is formed at four corners thereof.

Each of the fixing rods 312 is formed in a 'C' shape, and both ends of the fixing rods 312 are inserted into holes formed in the fixing plate 311 and fixed by being fastened by a nut.

The fixing plate 311 is disposed on one side of the support 10 so that both ends of the fixing rod 312 are inserted into the holes of the fixing plate 311 on the other surface of the support 10 opposite to the one side of the support 10 The fixing member 310 can be fixed to the support 10 by fastening the nut to both ends of the fixing rod 312 passing through the fixing plate 311 after the fixing rod 312 is positioned.

Two protrusions 311a are formed on the fixing plate 311 of the fixing member 310 so as to face the upper and lower surfaces of the insulator 320 and have through holes. Another through hole is formed.

The fixing member 110 and the interposer 120 are disposed so that the through hole of the protruded piece 311a and the through hole of the long interposer 320 are aligned with each other so that the hinge pin 318 is inserted through the through hole. The long insulator 320 can be rotatably installed.

The elongated insulator 320 is extended from the support 10 to insulate high voltage electricity flowing along the catenary 54 from being transmitted to other structures such as the support 10, ). As described above, one end of the long-term insulator 320 is rotatably supported on the fixing member 310, and the other end is extended in a cantilever shape.

One end of the angle member 330 is fixed to the elongated insulator 320 and the other end of the angle member 330 is provided to extend in the longitudinal direction of the elongated insulator 320. A plurality of positions Adjustment holes 331 are provided.

The position adjusting holes 331 are vertically penetrated through the angle members 330 and are spaced apart from each other by a predetermined distance. The support clamps 331 and 332, which support the rigid catenary 50 through the position adjusting holes 331, (200) can be fixedly mounted on the support bracket (300). A specific embodiment of the support clamp 200 according to the present invention will be described later.

More specifically, when the holding plate 240 of the support clamp 200 is fastened through the bolt 242 and the nut 244 in a state where the holding plate 240 is placed on the position adjusting hole 331 at a desired position, May be fixed to the member (330).

Meanwhile, the other end of the angle member 330 is provided with a ground rod connector 350 for securing the safety of the operator from electricity of high voltage during maintenance and repair. The ground rod connector 350 is a rod bent in a " C " shape, and both ends of the rod are fixed to the angle member 330. Accordingly, the grounding rod (not shown) is placed in a space formed between the angle member 330 and the grounding rod connection 350, thereby grounding the grounding rod.

Although the long interposer 320 is rotatably coupled to the fixing member 310 in the present embodiment, the long interposer 320 may be welded to the fixing member 310 by welding, As shown in FIG.

FIG. 7 is an exploded perspective view of a support clamp according to an embodiment of the present invention, FIG. 8 is a perspective view of a support clamp according to an embodiment of the present invention, FIG. 9 is a front view of a support clamp according to an embodiment of the present invention to be. 10 is a cross-sectional view taken along the line A-A 'of FIG. 9, and FIG. 11 is a cross-sectional view taken along the line B-B' of FIG.

7 to 11, a support clamp 200 for supporting a rigid electric wire 50 according to an embodiment of the present invention includes a body 210, The other side of which is connected to the support bracket 300 (see Figs. 5 and 6), and a main shaft 220 which is detachably coupled to both sides of the body 210 and which slides the rigid catenary 50 And a supporting portion 230 that supports the supporting portion 230 as much as possible.

The body 210 may be made of the same aluminum material as the material of the rigid catenary 50 and may have a plate shape having a predetermined width. The main shaft 220 may be fixedly coupled to a central portion of the body 210. A supporting plate 240 is provided on one side of the main shaft 220 and a supporting clamp 200 is fixed to the supporting bracket 300 through a bolt 242 and a nut 244, As shown in Fig.

The support part 230 supports the rigid electric wire 50 in a slidable manner. However, if necessary, the support part 230 can selectively support the rigid electric wire 50 in a fixed state. It is also possible to apply them alternatively. Here, the support part 230 may be made of an aluminum material similar to the body 210.

7, two support portions 230 may be coupled to both sides of the body 210, and the support portions 230 may be bolted to the support portion 230 by a plurality of fixing bolts 212 and washers 214. Referring to FIG. The support part 230 may be detached from the body 210 by disassembling the fixing bolt 212.

The supporting part 230 may be deformed such that the body 210, the main shaft 220 and the supporting part 230 are integrally formed as well as the supporting part 230 can be coupled to or detached from the body 210 as in the present embodiment.

The support portion 230 includes a groove portion 232. The groove portion 232 is in contact with the protrusion 52a of the rigid catenary 50 and is slidable. The conductive member 234 may be provided to electrically connect the rigid wire 50 and the support bracket 300 so that the voltage is uniformly maintained.

The conductive member 234 basically functions to smoothly move the rigid catenary 50 when the rigid catenary 50 undergoes a temperature change or contraction. For example, And a sliding part made of a plastic material capable of sliding with respect to the sliding part.

The conductive member 234 electrically connects the rigid catenary cable 50 and the support bracket 300 through the support clamp 200 to uniformly maintain the voltage applied to the rigid catenary cable 50 and the support bracket 300 .

Therefore, safety incidents can be prevented by suppressing the occurrence of arc which may occur when the voltage is not uniform, and it is possible to implement the voltage equalization between the rigid electric cable 50 and the support bracket 300 with a simple structure in place of the conventional equalization line, Convenience can be secured.

The conductive member 234 is required to perform a sliding function as well as to maintain the voltage uniformly and to support the rigid electric wire 50 at a certain height while allowing the rigid electric wire 50 to slide.

Therefore, it is preferable that the conductive member 234 is made of a conductive plastic material containing carbon or a conductive material as described above, or it is made of a conductive sliding bearing.

Since the conductive member 234 made of the conductive plastic or the sliding bearing has a low frictional resistance, it can smoothly move in a state in which the projecting portions 52a are in contact with each other when the rigid electric wire 50 is expanded or contracted. Here, the conductive member 234 may be configured to surround the bottom surface and the side surface of the protrusion 52a of the rigid electric cable 50.

A specific material of the conductive member 234 is polyoxymethylene (POM), for example, so that the surface resistance of the conductive member 234 is less than 10 11 Ω so that conductivity and wettability can be smoothly realized, The coefficient of friction is preferably 0.35 or less.

The support 230 is coupled to both sides of the body 210 and supports the rigid catenary 50 in a slidable state.

The support clamp for a rigid wire cable according to the present invention described above can prevent arc generation by eliminating the voltage unevenness between the rigid wire and the support bracket and secure the stability and reliability of the structure by eliminating the durability deterioration factor of the rigid wire support structure. And it is possible to secure convenience in construction of a rigid electric wire and increase productivity.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined in the appended claims. You can do it. It is therefore to be understood that the modified embodiments are included in the technical scope of the present invention if they basically include elements of the claims of the present invention.

50: Rigid body line 100: Expansion joint
200: Support clamp 300: Support bracket

Claims (9)

A support clamp for a rigid electric wire, which is mounted on a support bracket for supporting a rigid electric wire at regular intervals to clamp the rigid wire,
Body;
A main shaft connected to the body on one side and to a support bracket on the other side;
A support portion detachably coupled to both sides of the body and slidably supporting the rigid electric wire; And
In order to prevent arcing due to voltage unevenness between the rigid electric wire and the support bracket, the rigid electric wire and the support bracket are electrically connected to each other so as to omit the equalization line connecting the rigid wire and the support bracket, And a conductive member having wettability for allowing the rigid electric wire to swell and shrink while permitting expansion and contraction of the rigid electric wire,
Wherein the conductive member is made of polyoxymethylene (POM), the surface resistance of the conductive member is 10 11 Ω or less, and the conductive member has a coefficient of friction Is 0.35 or less. The method according to claim 1,
Wherein the support portion includes a groove portion in which the rigid electric wire is seated and supported. delete delete delete delete A support clamp for a rigid electric wire, which is mounted on a support bracket for supporting a rigid electric wire at regular intervals to clamp the rigid wire,
A main shaft connected to the support bracket;
A supporting portion coupled to or integrated with the main shaft to support the rigid electric wire;
The rigid electric wire and the support bracket are electrically connected to each other so as to omit the equalization line connecting the rigid electric wire and the support bracket in order to prevent an arc due to voltage unevenness between the rigid wire and the support bracket, A conductive member having conductivity to keep the voltage of the bracket even and a conductive member having wettability to allow the rigid electric wire to swell and contraction while slidably supporting the rigid electric wire,
Wherein the conductive member is made of polyoxymethylene (POM), the surface resistance of the conductive member is 10 11 Ω or less, and the conductive member has a coefficient of friction Is 0.35 or less. delete delete

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